//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty.  In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
//    claim that you wrote the original software. If you use this software
//    in a product, an acknowledgment in the product documentation would be
//    appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
//    misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//

#ifndef CHUNKYTRIMESH_H
#define CHUNKYTRIMESH_H

struct rcChunkyTriMeshNode
{
  float bmin[ 2 ];
  float bmax[ 2 ];
  int i;
  int n;
};

struct rcChunkyTriMesh
{
  inline rcChunkyTriMesh() :
    nodes( 0 ), nnodes( 0 ), tris( 0 ), ntris( 0 ), maxTrisPerChunk( 0 )
  {
  };

  inline ~rcChunkyTriMesh()
  {
    delete[] nodes;
    delete[] tris;
  }

  rcChunkyTriMeshNode* nodes;
  int nnodes;
  int* tris;
  int ntris;
  int maxTrisPerChunk;

private:
  // Explicitly disabled copy constructor and copy assignment operator.
  rcChunkyTriMesh( const rcChunkyTriMesh& );

  rcChunkyTriMesh& operator=( const rcChunkyTriMesh& );
};

/// Creates partitioned triangle mesh (AABB tree),
/// where each node contains at max trisPerChunk triangles.
bool rcCreateChunkyTriMesh( const float* verts, const int* tris, int ntris,
                            int trisPerChunk, rcChunkyTriMesh* cm );

/// Returns the chunk indices which overlap the input rectable.
int rcGetChunksOverlappingRect( const rcChunkyTriMesh* cm, float bmin[2], float bmax[2], int* ids, const int maxIds );

/// Returns the chunk indices which overlap the input segment.
int rcGetChunksOverlappingSegment( const rcChunkyTriMesh* cm, float p[2], float q[2], int* ids, const int maxIds );


#endif // CHUNKYTRIMESH_H
